How to: saving clicks with many digital signatures

to put a digital signature in a pdf document, i open the file with Acrobat Reader DC. Then I have a bar on the right with tools and
CLICK on "more tools".
Then I CLICK on "Certificates".
Then a certificate header appears at the top.
Then I CLICK on "Digitally sign".

I would like to save these 3 CLICs and always add "digitally sign" in the header next to the permanent icons.

How can I do this?