In order to change the multisignature limit, click on the person icon on the main screen in the application, then select Settings -> Company Members (at the bottom of the screen) ->  select the company member for who you want to change the limit -> select “EDIT” at the bottom of the screen -> set up the new limit and save -> push notification will be send to all the representatives in the company to accept the modification of the limit-> when all the representatives accept it, the limit will be changed.

Please bear in mind that only company members with representative function are allowed to change the multi-signature limits.