Insert a condition step in a workflow

Dear Expert,

I have a general question about the workflow. I have created a workflow template and currently it is being used. This workflow consist about 35 steps in it. Currently i have a requirement which is to insert a condition check in step 6. If satisfied the condition the it will continue in step 7 and so on, if it does not then will continue in step 20.

Is this possible to be done? How can i achieve this.

Thanks,

Regards,

Bryan