You can set the issue creation defaults (channel) to quickly create the issues in Slack channels.
To get started, navigate to the Troopr web app and click on Jira Bot in the left side panel and choose "Channel Preferences". Then select the channel to configure and find the defaults configuration in the "Channel Defaults" section.
Alternatively, you can reach the channel preferences page from the Slack channel by typing /t configure and by clicking on the "Advanced" button in the Channel Preferences section.
Set your default project and issue type and then optionally set defaults to any of the fields corresponding to each issue type. Once done, save the settings for the channel.
You can always update these settings by launching this form again.