# Create Laytime Calculation 1. Open the **Laytime Calculation** module in the Operations section. 2. Click **Create Laytime Calculation**

in the top right corner. 3. Fill in all required fields listed below in the Create New Laytime Calculation window. 4. Click **Create**. ### **Required fields** | *Vessel \** | Used to filter *Vessels* | | ----------------------- | --------------------------------------------------- | | *Voyage - Counterpart* | Combines the voyage reference and cargo counterpart | | *Responsible Charterer* | Responsible charterer, default to the current user | | *Cargo Ports* | Cargo Ports to be included in the calculations | \* Only available when not creating a laytime calculation from the voyage drawer. {% hint style="info" %} Field Conditions Each field narrows down the next choice. Once a Vessel has been selected, the Voyage - Counterpart field will be enabled. With both Vessel and Voyage - Counterpart selected, the related cargo ports will appear underneath. At least one cargo port MUST be chosen. {% endhint %}