Dic: enlist (one of its meanings as a verb)

• I had to cut down a tree and enlist the help of seven neighbours to get it out of the garden!.
• I've read that you've enlisted some 12-year-olds to help out in your campaign.

1. VERB | If you enlist the help of someone, you persuade them to help or support you in doing something.
2. to obtain (someone's help or support)
3. To engage the support or cooperation of.

.... Cobuild, Collins Essential, The American Heritage