I’ve been tasked to try to provide some simple functionality in my current subscription of salesforce in order to “prove” salesforce’s ease of use and fit for the organization. However, I feel as if I am chasing my tail in trying to build the requested customizations and I am wondering if it’s due to the limits of my subscription. 

I am simply trying to place a picklist with different categories "Visit, Voicemail, Call, Email" within the log a call form, and also have this pick list active on the log a call form within Salesforce1 (mobile app). Any assistance you can provide will be appreciated. 

- The use case I am trying to create is sales user goes to accounts> searches account and pull up profile > logs a call (or visit, or activity) > adds description and saves entry so that it shows in the chatter feed.