I need to have in Accounts 2 Roll-Up field on relating Contracts, and 1 Check field in Accounts based on Contracts.
1/ Check Field in Accounts
Name: Has Contracts
Set to True if Account has at least 1 Contract
2/ Roll-Up Field in Accounts
Name: Number of Contracts
Counts number of Contracts relating to Account (whatever their status is)
3/ Roll-Up Field in Accounts
Name: Number of Renewed Contracts
Counts the number of Contracts having Status set to "Renewed" and relating to Account.