When you mousover the current selected tab, the TMT arrow 
will appear. Click on the arrow to add the tab to TooManyTabs. The tab state & tab history are also stored to TooManyTabs. (Note: the tab is unloaded from the browser to release memory)
Or you can right click on any tab to open the context menu, then click "Send Tab to TooManyTabs".
Click the stored tab will restore the tab to the browser. Notice that the page is open again from disk cache. Tab history and scroll position are restored.
To pin a tab so that the tab is not removed when restored, right click on TooManytabs, click "Pin This Tab" from the context menu. A little yellow pin will appear on the tab.
When you open a pinned tab, the web page is reloaded and tab state & history will not be restored.
You can also access other tab related functions in this context menu, e.g. Rename This Tab, Change Tab Color, View Tab History etc.
TooManyTabs stores up to 20 recently closed tabs. To clear the tab history, open the " Recently Closed Tabs" panel and click "Clear Recently Closed Tabs".
There are three ways to hide or show TooManyTabs.
from your customized toolbar palette and put it on your toolbar.
You can also customize the position of the buttons on TooManyTabs just like other toolbars. For more details, please refer to here. 
Go to TooManyTabs > Options > check "Automatically Hide TooManyTabs Row". TooManyTabs will hide automatically when your mouse is away after a certain delay (default is 5 seconds). To show TMT again, see the 'Hide & Show TMT' section.
You can also adjust the delay in the options. E.g. a delay of 10s means that TooManyTabs Row will automatically hide when your mouse is away from it for 10 seconds. To show TMT again, see the 'Hide & Show TMT' section.
The new options panel allows you to Add/Delete/Rename Rows easily.
