Custom Widgets – Add Text Dynamically

Hi all! ??
I’m wondering if this is possible, maybe via jQuery.
I’m developing a custom theme and I am able to write my own simple widgets that shows some little info, inserted by the user.
The widget I’m thinking of now should be able to show this information:
room number + phone number
As the rooms can be many, I should be able to input
room 1 + phone no 1
room 2 + phone no 2
room 3 + phone no 3
without dragging the widgets 3 times in the sidebar. Anyone can help with this issue?
Thank you