We need enough man power.

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. We need enough manpower to deal with customers and to check if they have fulfilled/satisfied the criteria/requirements to be eligible for discount by sharing the store’s location and by liking its website on social media.
  2. We need enough manpower to deal with customers and to check if they have fulfilled the action/task on social media criteria/requirements in order to be eligible to receive discount.
  3. He was suggesting that we could emulate their business model by selling merchandize in order to create ore avenue to generate revenue.

Are the above sentences correct? Please advise.

2

Way too overlong and convoluted.
1/2) We need enough manpower to deal with customers and check that they have fulfilled the criteria to be eligible for discounts.
3) He suggested that we could emulate their business model by selling merchandise in order to generate revenue.