[5e Shaped] Multiattack on PC sheets

So my DM just changed from the old sheet to the new shaped sheet. I want to adopt the new weapons section for using a multiattack with the flurry of blows. First I'd love to see a multiattack button on PC sheets(from the NPC sheets). Second I would like some help getting the multiattack to work in a macro. I get a lot of weird problems and can't seem to make it look or work right.

I might handle multiple attacks like so.

Ok so this is a very intricate, can you help explain what the ! %#13,&#37 means?

&amp;#13; and &amp;#37; are HTML entities (respectively, for carriage return and %) that allow API Command Buttons function in a nonstandard way (e.g. to the effect of calling an Ability Macro). Check out: <a href="https://wiki.roll20.net/API:Chat#Entering_API_Butt" rel="nofollow">https://wiki.roll20.net/API:Chat#Entering_API_Butt</a>...