The documentation on openBIS installation can be found here: openBIS set up
By default, Objects are not shown in drop-down menus. This option can be enabled in the Settings by an admin:
Select the Collection folder, and select Edit Collection from the More drop down.
In the More dropdown on the Experimental Step page, there is a Move option.
Select the entries from the table (checkbox) and choose Delete Selected from the Exports and dropdown.
Go to the Object Browser under Utilities, and browse for Storage Position. Tick the storage positions you want to remove in the table and choose Delete selected form the Export and.. dropdown in the table.