The Talk application within the Managed Nextcloud Standard Plan consists of three distinct features; Chat Messages, Audio Call and Video Call.There is no performance and usage limit on users for the Chat Messages.For optimum performance, the Audio Call feature can support up to a maximum of 10 users in a single session.For optimum performance, the Video Call feature can support up to a maximum of 5 users in a single session.If you foresee your usage to exceed the above guidelines, please request for higher performance custom plans by reaching out to our support team.