how to customize tabs at Orion website?

All tabs can be customized via SETTINGS > CUSTOMIZE MENU BARS. You can also create your own ones. I am not sure if visible TABs name can be changed though, such as HOME, NETWORK, etc

Then, you can assign your custom tabs per user/per group via SETTINGS > MANAGE ACCOUNTS > EDIT > DEFAULT MENU BAR AND VIEWS

Customize menus is not a problem but my question was about tabs as HOME, NETWORK, APPLICATIONS etc. I'm afraid that they are bult-in module names which can be only displayed or not. There is no simple way by change ane settings to change those names but my hope was if anybody found tricky way to do it

Customize menus is not a problem but my question was about tabs as HOME, NETWORK, APPLICATIONS etc. I'm afraid that they are bult-in module names which can be only displayed or not. There is no simple way by change ane settings to change those names but my hope was if anybody found tricky way to do it

The names of the module tabs can not be changed.  As you have noticed, these can be removed on a per user basis, but aside from that, not changeable.