Agricultural implement comprising a system comprising a manifold base module (31, 31'), and a first manifold sub-module, arranged for controlling at least one hydraulic function of the agricultural implement wherein the manifold base module comprises: first and second feed ports (311a, 311b), a first main channel, which is connected to the first feed port, a second main channel, which is connected to the second feed port, a first numerically controllable valve arrangement (317a, 317b, 3171a, 3171b, 3172a, 3172b; 318), which is connected to the two main channels (312a, 312b), a first control channel, which is controllably connectable to the main channels (312a, 312b) via the valve arrangement (317a, 317b, 3171a, 3171b, 3172a, 3172b; 318), a second control channel, which is controllably connectable to the main channels (312a, 312b) via the valve arrangement (317a, 317b, 3171a, 3171b, 3172a, 3172b; 318), a first forwarding port, which is connected to the first main channel, a second forwarding port, which is connected to the second main channel, and at least one bypass channel (315a, 315b), which is connected to one of said first and second main channels (312a, 312b), for bypassing the first numerically controllable valve arrangement, wherein the feed ports (311a, 311b) provide a first coupling interface, which is formed on a first surface of the manifold module, and wherein control ports connected to the control channels (313a, 313b) provide a second coupling interface, which is separate from the first coupling interface, by being formed on a second surface of the manifold module, wherein the first manifold sub-module comprises: first and second throughgoing control channels (323a, 323b; 332a, 332b), a second numerically controllable valve arrangement (325a, 325b, 326, 327), which is arranged to control a flow between one of the control channels (323a, 323b; 324a, 324b) and the bypass channel (322a, 322b; 334a, 334b), and at least one bypass channel (322a, 322b; 334a, 334b), for bypassing the second numerically controllable valve arrangement, wherein ports connected to the control channels (324a, 324b) of the first manifold sub-module and ports connected to the bypass channels (322a, 322b) of the first manifold sub-module form a fourth coupling interface, which, is formed on a first surface of the manifold sub-module, and wherein the first manifold sub-module is connected to the manifold base module by the second coupling interface being connected to the fourth coupling interface. first and second feed ports (311a, 311b), a first main channel, which is connected to the first feed port, a second main channel, which is connected to the second feed port, a first numerically controllable valve arrangement (317a, 317b, 3171a, 3171b, 3172a, 3172b; 318), which is connected to the two main channels (312a, 312b), a first control channel, which is controllably connectable to the main channels (312a, 312b) via the valve arrangement (317a, 317b, 3171a, 3171b, 3172a, 3172b; 318), a second control channel, which is controllably connectable to the main channels (312a, 312b) via the valve arrangement (317a, 317b, 3171a, 3171b, 3172a, 3172b; 318), a first forwarding port, which is connected to the first main channel, a second forwarding port, which is connected to the second main channel, and at least one bypass channel (315a, 315b), which is connected to one of said first and second main channels (312a, 312b), for bypassing the first numerically controllable valve arrangement, wherein the feed ports (311a, 311b) provide a first coupling interface, which is formed on a first surface of the manifold module, and wherein control ports connected to the control channels (313a, 313b) provide a second coupling interface, which is separate from the first coupling interface, by being formed on a second surface of the manifold module, wherein the first manifold sub-module comprises: first and second throughgoing control channels (323a, 323b; 332a, 332b), a second numerically controllable valve arrangement (325a, 325b, 326, 327), which is arranged to control a flow between one of the control channels (323a, 323b; 324a, 324b) and the bypass channel (322a, 322b; 334a, 334b), and at least one bypass channel (322a, 322b; 334a, 334b), for bypassing the second numerically controllable valve arrangement, wherein ports connected to the control channels (324a, 324b) of the first manifold sub-module and ports connected to the bypass channels (322a, 322b) of the first manifold sub-module form a fourth coupling interface, which, is formed on a first surface of the manifold sub-module, and wherein the first manifold sub-module is connected to the manifold base module by the second coupling interface being connected to the fourth coupling interface. first and second throughgoing control channels (323a, 323b; 332a, 332b), a second numerically controllable valve arrangement (325a, 325b, 326, 327), which is arranged to control a flow between one of the control channels (323a, 323b; 324a, 324b) and the bypass channel (322a, 322b; 334a, 334b), and at least one bypass channel (322a, 322b; 334a, 334b), for bypassing the second numerically controllable valve arrangement, wherein ports connected to the control channels (324a, 324b) of the first manifold sub-module and ports connected to the bypass channels (322a, 322b) of the first manifold sub-module form a fourth coupling interface, which, is formed on a first surface of the manifold sub-module, and wherein the first manifold sub-module is connected to the manifold base module by the second coupling interface being connected to the fourth coupling interface.