1. Company invitation
It is literally inviting people to work together as a team. If someone in the same team, project invitation’s simple because people are appeared on the invitation list automatically and it will be easy to manage them too.
1) Invite by company’s administrator(Administrators only): When you put email addresses and select ‘Invite’, company’s private-url will be sent to those emails and people can easily participate to the team by clicking that.
2) Direct invitation(Join through company’s private-url): You can simply let your team members know the company’s url directly. For example, if the company’s url you created is 'abc', then it will be 'abc.flow.tem'. When other employees enter the url, they will see the private page, and if they sign up on there, they will become part of the same account users.
2. Project invitation
It invites participants to the project you want. You can invite internal members(colleagues) as well as external partners to collaborate to work project together. One thing to keep in mind is that project participants should be carefully selected and invited because after they are invited, they can see all the information in the project.