Aysan,
Related Companies is a feature that allows to associate a contact with more than one company. In older versions of epesiBIM we had one multiselect field where you could set for one contact more than one company - for example Contact Joe Doe works for his own Company Joe Doe Inc., but he is also a consultant for Company X and Company Y. However using this approach there was no easy way to specify which company is the main one (Company Joe Doe Inc.).
In new version we changed that and there is a field called Company Name which is the main company and another multiselect field called Related Companies where you can make such association:
What you are trying to do is to associate one company with other companies. There is a module for building a tree like structure of companies called Parent Company. Maybe this will work for you. Go to Modules Administrations, switch to Advanced setup and install Parent Company module:
Now you can set for example Hotel A (a Company) that is a child of another company:
In the addon you will see all child companies - this addon will be available in the next release (1.1.6) which you can download byt the end of this week from Sourceforge.
If this scenario does not work for you we have a Premium module (paid) called Relations. In this module you can create any association of any Company or Contact with another Company or Contact (many to many relationship). It will be available in our AppStore soon but if you need it now please PM me.
