As you start the 6th chapter in the Guardians of The Galaxy, the crew will head separate ways after entering Knowhere. Rocket and Groot will separate from the team and you have to move forward to get to the security tower.
Knowhere is a huge place and it is easy to get lost with all the NPCs and areas you can explore. There is a bar on the lower ground floor and you can meet Lipless here which will give you the Collector’s Emporium Ticket. This event does not affect the main storyline and you can go ahead and move forward to the security tower without encountering Lipless.
Security Tower Location
To go to the security tower, you must go to the right of the bar and up the stairs. There will be a central area here and you have to keep going up the stairs to get to the security tower. Just follow the staircase until you can see the tower from a distance. The entrance to the tower will be protected by a huge red gate with guards standing outside.