Before creating a new project you can use the Capacity Checker to check whether you have capacity to undertake the project
Head to Projects > Capacity Checker
View the current working capacity (number of team members and how many days of work they have capacity for - you can press Edit to amend this)
Specify the Start date, Deadline Date and estimated Days of work and press Check Capacity
The system will then provide a list of all projects that overlap in the date period with the the estimated number of days to work and the capacity required
The system will then tell you the current output capacity, and whether there is capacity to schedule this project in