With your PowerApps project, I offer you solid expertise in Software Architecture coupled with my Full Stack Development background. Leveraging on this, I will create a well-designed and highly efficient PowerApps solution that seamlessly integrates with your SharePoint list and meets your precise needs—employing a text-based input module for the bulk add feature. This will allow your users to quickly input information en masse, facilitating smoother data operations.
Furthermore, I am adept at creating complex relationships, ensuring that the searchable dropdown linked to the SharePoint list operates flawlessly. I plan to include a 'New' option in the dropdown for easy data addition — on the same screen. This way, users can effortlessly search through existing data or swiftly include new information when needed.
Notably, I hold a strong commitment to client satisfaction; thus, apart from delivering a fully functional product to you, I will also provide comprehensive step-by-step documentation to ensure that afterwards, you can easily replicate and manage the system in your environment yourself. Let's work together to achieve your desired outcome!