diff --git a/stand.py b/stand.py
index 8aa3710..c68b945 100755
--- a/stand.py
+++ b/stand.py
@@ -1,17 +1,20 @@
 #!/usr/bin/env python
 
 from datetime import datetime
-from typing import Any
+from typing import Annotated, Any
 
 import arcticdb as adb
 import pandas as pd
-from fastapi import APIRouter
+from fastapi import APIRouter, Path
 from nicegui import app, ui
 
 from aggridx import aggridx
 from registry import Registry
 
 
+PGroup = Annotated[str, Path(pattern=r"^p\d{5}$")]
+
+
 uri = "lmdb://adb"
 ac = adb.Arctic(uri)
 
@@ -26,7 +29,8 @@ router = APIRouter()
 grids = Registry()
 
 
-options = {
+OPTIONS = {
+    "context": {"pgroup": None},
     "defaultColDef": {
         "filter": True,
         "editable": True,
@@ -44,15 +48,16 @@ def update_adb(evt):
         # ignore event if it was no direct edit
         return
 
+    pgroup = evt.args["context"]["pgroup"]
     index = evt.args["data"]["index"]
     index = datetime.fromisoformat(index) # nicegui converts datetime to str
-    df = lib.read("p12345", date_range=[index]).data
+    df = lib.read(pgroup, date_range=[index]).data
 
     col_id = evt.args["colId"]
     new_val = evt.args["newValue"]
 
     df.at[index, col_id] = new_val
-    lib.update("p12345", df)
+    lib.update(pgroup, df)
 
 
 def update_grids(evt):
@@ -65,20 +70,23 @@ def update_grids(evt):
         grid.set_cell_client(evt)
 
 
-@ui.page("/")
-def page():
+@ui.page("/{pgroup}")
+def page(pgroup: PGroup):
 #    with ui.left_drawer() as ld:
 #        ld.hide()
 #        dark = ui.dark_mode()
 #        ui.switch("dark mode").bind_value(dark)
 
     try:
-        df = lib.read("p12345").data
+        df = lib.read(pgroup).data
     except adb.exceptions.NoSuchVersionException:
         df = pd.DataFrame()
 
     df = df.reset_index()
 
+    options = OPTIONS.copy()
+    options["context"]["pgroup"] = pgroup
+
     grid = aggridx.from_pandas(df, options=options)
     grid.classes("h-[calc(100vh-2rem)]") # full height minus padding
     grid.on("cellValueChanged", update_adb)
@@ -86,12 +94,12 @@ def page():
     grids.add(grid)
 
 
-@router.post("/append/")
-def append(row: dict[str, Any]):
+@router.post("/{pgroup}/append/")
+def append(pgroup: PGroup, row: dict[str, Any]):
     now = datetime.now()
 
     df = pd.DataFrame(row, index=[now])
-    lib.append("p12345", df)
+    lib.append(pgroup, df)
 
     now = str(now) # nicegui converts datetime to str
     row = {"index": now, **row} # setdefault would not force index to be the first column
@@ -106,7 +114,7 @@ def append(row: dict[str, Any]):
 
 app.include_router(router)
 
-ui.run(title="stand", favicon="icon.png", fastapi_docs=True, dark=True)
+ui.run(title="stand", favicon="icon.png", fastapi_docs=True, dark=True, show=False)