Retirement tax questions

Ok, so changing where I entered the contribution amounts to the 401k fixed one issue, but it still shows Susan as over contributing because she had no positive net income on her business. The question is how/where do I enter the spousal contribution to Susan? Or am I limited to contributing $26,000 total, meaning if I make a $7,000 contribution to Susan, am I then limited to $19,000 that I can contribute to my own? It was my understanding that the spousal contribution was in addition... Maybe there is some other check-box I need to check with respect to a spousal contribution?