If you are not already on the tab in question, click the tab called "Processes" (see the first image below). Clicking the tab called "Processes" will open a list of processes available to you (see the second image below).
Go to the list of processes.
Click the process or processes you wish to start (see image below). Note that the process or processes you click will start. When a process is started, you will be sent directly into the building through which you started the process.
