Since you model this process for a particular object, you have to bind this process with the respective object, to be able to start it from the object’s page. To do so:
Create an input variable with the List link type in the process context and select the required object as its data type (fig. 1). If you select the Single link type, it will be possible to pass only one value to the process. If you select the List link type, any number of object instances can be passed to the process;
Fig. 1. Process context. Input variable with the List link type
Add the created process on the Processes tab of the object page in ELMA Designer (fig. 2).
After that, the object page in Web Application will display the Start Process button (fig. 3). Select the object instances for starting the process. Click this button to start a process instance. This feature is available to users, who has access to the Processes section and to this particular process.
Fig. 3. Object page. Start Process button
To learn more about starting a process from an object page, see the respective Help section.