Provisioning and connecting Attended bot to Cloud Orchestrator

Hi Folks,
I’m trying to connect 2-3 Attended Licensed bots to could orchestrator, however I cant establish successful connection for more than one bot(Automation developer). Only one bot is getting connected as Automation Developer and the attended bots(Named users ) aren’t getting connected. I followed the guidelines but no luck.

Should the attended bot must have interactive signin or can connected by provisioning, with machine keys?

Please help me the best practices, to connect Attended bot to Apollo design uipath. I’m new to this.