You can bookmark a page by clicking the bookmark icon at the top of the screen next to the search bar!  After that small window shows up, click the "+" icon next to personal links. and click "Add Link".

This will load up the menu to add a new link, under link URL it will automatically enter the link of the page you're currently on. Set a custom name for the link, (Such as, Volunteer Groups) and click save at the bottom of the window!

Once finished, anytime you want to get to that specific page, you can open that bookmark menu and select it from there!