How to set your current IP to a static IP.
We would need to access the syetem preferences.
We then click on the network icon.
Once on the network preferences, please keep note of the IP Address the Mac currently has (we will need it for the next step), then click on Advanced close to the right bottom corner
Here you would need to locate the TCP/IP tab and click on "Configure IPv4" and select "Using DCHP with Manual Address" then click "OK"
After clicking OK, you would need to input the IP Address we mentioned you needed to keep note of on the blue highlited area and click "OK" once more.
You will be taken to the next screen, we then simply click on apply, with this we have set the current IP Address as a Static IP for the MAC.