A computer-implemented method for providing guidance to a user on where to arrange an object of interest in an operating room, the method comprising: obtaining (S2) scene data indicative of a spatial pose of at least one item arranged within the operating room; obtaining (S4) first constraint data indicative of one or more requirements on a spatial relationship between a first object of interest and the at least one item arranged within the operating room; determining (S6), based on the scene data and the first constraint data, at least one primary spatial portion chosen from (a) a first spatial portion in which the first object of interest is recommended to be arranged, the first spatial portion being larger than the first object of interest , and (b) a second spatial portion in which the first object of interest is not allowed to be arranged; obtaining, for each of at least one second object of interest , second constraint data indicative of one or more requirements on a spatial relationship between the second object of interest and the first object of interest ; determining, for each of the at least one second object of interest , based on the determined primary spatial portion and the second constraint data, at least one secondary spatial portion chosen from (a) a third spatial portion in which the second object of interest is recommended to be arranged, and (b) a fourth spatial portion in which the second object of interest is not allowed to be arranged; triggering display of a visualization of the at least one primary spatial portion to guide a user on where to arrange the first object of interest in the operating room; and triggering, for each of the at least one second object of interest , display of a visualization of the at least one secondary spatial portion to guide a user on where to arrange the at least one second object of interest in the operating room. obtaining (S2) scene data indicative of a spatial pose of at least one item arranged within the operating room; obtaining (S4) first constraint data indicative of one or more requirements on a spatial relationship between a first object of interest and the at least one item arranged within the operating room; determining (S6), based on the scene data and the first constraint data, at least one primary spatial portion chosen from (a) a first spatial portion in which the first object of interest is recommended to be arranged, the first spatial portion being larger than the first object of interest , and (b) a second spatial portion in which the first object of interest is not allowed to be arranged; obtaining, for each of at least one second object of interest , second constraint data indicative of one or more requirements on a spatial relationship between the second object of interest and the first object of interest ; determining, for each of the at least one second object of interest , based on the determined primary spatial portion and the second constraint data, at least one secondary spatial portion chosen from (a) a third spatial portion in which the second object of interest is recommended to be arranged, and (b) a fourth spatial portion in which the second object of interest is not allowed to be arranged; triggering display of a visualization of the at least one primary spatial portion to guide a user on where to arrange the first object of interest in the operating room; and triggering, for each of the at least one second object of interest , display of a visualization of the at least one secondary spatial portion to guide a user on where to arrange the at least one second object of interest in the operating room. <EOS>