First, go to the Settings button from the drop-down, after you hover your cursor over your profile picture in the upper right hand corner:
Then, click Preference:
From there, scroll down to DCC Bridge:
Here, you will see all the plugins you can download and install, and can toggle them on and off after they are installed. The Guide buttons will take you to help center articles regarding that specific plugin.
Note: for Bambu, models will show up un-textured/colored after importing. More info here.