Newbie needs help to draw an arrow between selected cells...

Greetings to all... Brand new to the forum and currently pulling whats left of my hair out and could use some expert advice!

I have a weekly scheduler, very simple table with Monday through Sunday, and 12 lines that I'll list a certain task to be accomplished. If my first listed task is to, lets say "Install revised FMS software" and I plan to do this Tuesday through Friday, I'd like to find a way to have excel draw the arrow between Tuesday and Friday for me, possibly from highlighting the specific cells I want the arrow, or typing an X in Tuesday and another X in Friday... Is this possible?

I'm open to any suggestions, comments, complaints or good-luck wishes.

Thank in advance

Picture1.png

Here's a snapshot of my table, and what I'm trying to do with the arrow...